Medium severity · published Apr 20, 2021
CVE-2021-30496
The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the…
5.7
CVSS
1.2%
EPSS
No
On KEV
Description
The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that "this behavior can't be considered a vulnerability."
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
Telegram · Telegram
7.6.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30496
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30496
Exploit
https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31
Vendor Advisory
https://t.me/joinchat/bJ9cnUosVh03ZTI0
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